My e350 7.3 10k# smb doesn't tow with ease like my 7.3 f250 did. Still it'll get the job done. Tows and shifts better with the 5-star tow tune compared to no tune. I needed a solid steel hitch extension bar so the electronic power assist tongue jack doesn't whack the Aluminess box on turns. I also use an Equal-I-Zer weight distribution/anti-sway system. Helps level the van and prevents side to side swaying of the trailer.
Here's my fun car that I used to tow to participate in Time Attack and private track days.
Carson enclosed 20' tandem axle trailer. It's for sale as well.
Haven't actually towed this yet, but was test fitting last weekend to see if I could tow with bike rack deployed on the swing arm. Looks like it clears. Actually my friend's trailer that he tows with his FJ.
Small local builder. This is his second one. My friend bought the first one then just traded it back in for this Rev. 2 build.
It is nice in that the top is now fixed and side & rear panels fold down for access. 18 gallon fresh water, water heater, house batteries, solar, instant hot water heater, shower wand, built in CB, and other stuff I can't think of right now.